Enable katex by adding `katex = "true"`

to the front matter

```
+++
katex = "true"
+++
```

If you want to enable KaTeX or MathJax for all post, add `katex = ture`

or `math = true`

in `config.toml`

in `[params]`

section.

It’s almost a dropin alternative to the mathjax solution,you should just choose one of them.

Inline math looks like this

```
This is text with inline math $\sum_{n=1}^{\infty} 2^{-n} = 1$
```

This is text with inline math $\sum_{n=1}^{\infty} 2^{-n} = 1$ and with math blocks:

```
$$
\sum_{n=1}^{\infty} 2^{-n} = 1
$$
```

$$ \sum_{n=1}^{\infty} 2^{-n} = 1 $$